1.) To make the topping, place the half stick of butter into a medium saucepan along with the brown sugar. Bring to the boil gently and then take off heat.

2.) Grease a 9 inch cake pan with cooking spray and then pour the syrup into the bottom of the tin. Arrange the mango slices in the syrup. It doesn’t matter if the mango is not coated completely in the syrup as it will spread while cooking.

3.) To make the cake, cream the stick of butter and 2/3 cup of sugar. Add the eggs gradually and the vanilla. Add the orange zest and juice. Fold in the flour, baking powder and salt.

4.) Pour the cake batter onto the mangoes, being careful not to move them around too much.

5.) Place into a preheated 350 F oven for 30 minutes or until cake is cooked.